Kara Foster thinks the hardest thing about moving to Japan will be fitting in as an outsider. But dark secrets are stirring at her new school. When Kara befriends Sakura, a fellow outsider whose rebellious nature sets her apart from the crowd, she learns that Sakura's sister was the victim of an unsolved murder on school grounds. And before long, terrible things begin to happen.

It starts with nightmares - strange, otherworldly dreams that wake Kara in terror every night. Then more students start turning up dead, with strange marks on their bodies. Is Sakura getting revenge on those she suspects are responsible for her sister's death? Or has her dead sister come back to take revenge for herself?

All the evil of the ages will plague you, until my thirst for vengeance is sated...

Kara Foster is finally starting to fit in at her boarding school in Japan -- after all, nothing bonds you with your classmates like having an ancient demon put a curse on you. Hoping life can go back to normal now that the demon has been put to rest, Kara joins her friends Sakura and Miho in putting on a play for the Noh drama club. It's the story of the Hannya, a snake demon who inhabits the body of a beautiful woman. When a few members of the Noh club go missing, Kara fears that the real Hannya has been awakened by the curse. Then Miho is abducted, and Kara must find her before the Hannya destroys her. But the demon is wily, and may be hidden in the last place any of them would think to look...

Kara's life in Japanese prep school has been a whirlwind of terror, as a demon's curse keeps waking up ancient, evil creatures to torment her and her friends. When a student goes missing during a visit to a mountain forest, Kara and her friends are sure the curse has struck again. This time, it's a demon of winter, whose power is more chilling than anything they've encountered so far. And then it gets worse: the demon kidnaps Kara's boyfriend, Hachiro, with whom she's just starting to fall in love. Desperate to save him, Kara ventures back into the snowy woods, where dark forces await her . . .